1. Chemical Equations Test
Chapter 8 Review
Chemical Equations Test
10 multiple choice/fill in the blank questions
5 skeleton equations that you will have to balance and classify
5 word equations that you will have write the skeleton equation and balance.
5 unfinished equation in which you will predict the products and balance.

2. Sec. 1 Balancing Equations
First, identify the REACTANTS & PRODUCTS. (You may want to write or say out loud a word equation first.)
• Using correct formulas and symbols, write an unbalanced equation for the reaction. {A SKELETON EQUATION}
• Use coefficients to balance atoms ONE element at a time.
• START with elements that appear in only one reactant and
one product, and balance the atoms of those elements first.
• IF a polyatomic ion appears on both sides of the equation,
treat it as a single unit.
• Leave Oxygen and Hydrogen for the last elements to balance.
• Double-check to be sure that the number of atoms of each element is the same on both sides of the equation

3. Sec. 2 Predicting Equations
The five types of chemical rxns. in this unit are:
 Synthesis (S) A+ X  AX
 Decomposition (D) AX A + X **
Single Displacement (SD) A + BX  AX + B
X + AY  AX + Y
Double Displacement (DD)
AX + BY  AY + BX
Combustion (C) CxHy + O2  CO2 + H2O
** There are 5 special types of decomposition

4. Sec. 3 Activity Series An aid to predicting the products of SD Rxn
Sec. 3 Activity Series An aid to predicting the products of SD Rxn. It also can be used in predicting products of some other reactions
Each element on the list replaces from a compound in aqueous solution any of the elements below it. The first seven elements (Li - Na) react with cold water The next five metals (Mg – Cr) react with steam. The oxides of all of these first metals resist reduction by H2. The next six (Fe-Pb) and all metals above will react with acids. Metal oxides below Cr undergo decomposition by heating. All metals above Cu, can combine directly with oxygen. The last five metals (Hg - Au) are found free in nature, their oxides decompose when heated. They must be forced to form oxides.

5. Complete Chapter 8 Book review
Page Complete problems (12) 1, 3, 7, 11, 13, 15, 18, 19, 20, 27, 28 & 35